Digital device and method for providing additional service by using the same

ABSTRACT

A digital processing device capable of receiving an additional service is disclosed. In one aspect, a digital processing device includes i) an input unit, inputting a signal, ii) a subscriber identity unit, storing an identity code of a communication operator and generating a communication network access request message, iii) an additional service identity unit, storing an identity code of an additional service operator and generating an additional service request message and v) a control unit, generating a control signal allowing one of the subscriber identity unit and the additional service identity unit to be selectively driven. In accordance with at least one inventive embodiment, a user of the digital processing device can receive an additional service without his or her subscription to a specific communication operator and use various additional services in addition to the additional services provided by the subscribed communication operator.

RELATED APPLICATIONS

This application is a continuation application, and claims the benefitunder 35 U.S.C. §§ 120 and 365 of PCT Application No. PCT/KR2007/001503,filed on Mar. 27, 2007, which is hereby incorporated by reference.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a digital processing device, morespecifically to a digital processing device and a method for providingan additional service by using the same that can allow a subscriber toreceive the additional service without the subscription to a specificcommunication operator by including an additional service identitymodule.

2. Description of the Related Technology

Sudden development of information and communication technologies causesthe digital processing device to have more various multimedia functionssuch as a video game, a moving picture, wireless Internet, and a cameraas well as communication, to thereby provide a variety of additionalservices by using the multimedia functions.

Particularly, a portable terminal, which is one of most popular digitalprocessing devices, performs not only a call function of a simplecommunication device but also various multimedia functions such as avideo game, a moving picture, wireless Internet, and a camera, andprovides a variety of additional services supporting these functions.

SUMMARY OF CERTAIN INVENTIVE ASPECTS

One aspect of the present invention is a digital processing device and amethod for providing an additional service by using the same that canallow a user to receive an additional service without his or hersubscription to a specific communication operator.

Another aspect of the present invention is a digital processing deviceand a method for providing an additional service by using the same thatan additional service provider is not subordinated to a communicationoperator and is able to independently provide the additional service toa user.

Another aspect of the present invention is a digital processing deviceand a method for providing an additional service by using the same thatcan allow a user to use various additional services in addition tolimited additional services provided by the subscribed communicationoperator.

Another aspect of the present invention is a digital processing deviceincluding an input unit, inputting a signal; a subscriber identity unit,storing an identity code of a communication operator and generating acommunication network access request message; an additional serviceidentity unit, storing an identity code of an additional serviceoperator and generating an additional service request message; and acontrol unit, generating a control signal allowing one of the subscriberidentity unit and the additional service identity unit to be selectivelydriven

The subscriber identity unit further can store subscriber authenticationand charging information related to the communication operator.

The additional service identity unit can further include and storessubscriber authentication and charging information related to theadditional service operator.

At least one of the subscriber identity unit and the additional serviceidentity unit can be plurally provided.

At least one of the subscriber identity unit and the additional serviceidentity unit can be an outside-mounted device in a form of a card orchip.

The additional service identity unit can be mounted inside of thedigital processing device, and the subscriber identity unit can includethe outside-mounted device. Also, the additional service can access thecommunication network by using information stored in the inside-mountedadditional service identity unit if the subscriber identity unit is notcoupled.

The communication network can employ at least one of a wideband codedivision multiple access (WCDMA) method and a global system for mobilecommunication method.

Another aspect of the present invention is a method for providing anadditional service by an additional service providing device, which isconnected to a digital processing device through a communication networkdevice.

Another aspect of the present invention is a method for providing anadditional service by an additional service providing device, which isconnected to a digital processing device through a communication networkdevice, including receiving an addition service request message,transmitted through the digital processing device, from thecommunication network device; extracting authentication informationincluded in the additional service request message; and transmittingadditional service data according to the extracted authenticationinformation, whereas the digital processing device includes anadditional service identity unit and generates the additional servicerequest message including an additional service identity code, includedin the additional service identity unit, and the authenticationinformation, and the communication network device transmits theadditional service request message to the additional service providingdevice according to the additional service identity code included in theadditional service request message.

The transmitting of the additional service data according to theextracted authentication information further can include encoding theadditional service data, and the encoded additional service data can bedecoded in the digital processing device.

The additional service identity code and the authentication information,included in the additional service request message, can be stored inmeans mounted inside or outside of the digital processing device.

The digital processing device can further include a subscriber identityunit, storing a communication operator identity code and generating acommunication network request message, and the additional serviceidentity unit can be mounted inside of the digital processing device,and the subscriber identity unit can be mounted outside of the digitalprocessing device.

The operation that the digital processing device transmits theadditional service request message can include identifying theconnection of the outside-mounted subscriber identity unit; readingauthentication information from the inside-mounted additional serviceidentity unit if the connection of the outside-mounted subscriberidentity unit is not identified; generating an additional servicerequest message including the read authentication information; andtransmitting the generated additional service request message to thecommunication network device.

In the identifying of the connection of the outside-mounted subscriberidentity unit, the connection can be identified by an interrupt signalgenerated if the outside-mounted subscriber identity unit is connected.

The communication network can also employ at least one of a widebandcode division multiple access (WCDMA) method and a global system formobile communication method.

Another aspect of the present invention is a recorded medium havingrecorded a program including a typically realized command for executinga method for providing an additional service by an additional providingdevice, which is connected to a digital processing device through acommunication network.

Another aspect of the present invention is a recorded medium havingrecorded a program including a typically realized command for executinga method for providing an additional service, the command being able tobe executed by an additional service providing device such that theadditional service can be transmitted to a digital processing devicethrough a communication network, and the recorded medium being readableby an electronic device, including receiving an addition service requestmessage, transmitted through the digital processing device, from thecommunication network device; extracting authentication informationincluded in the additional service request message; and transmittingadditional service data according to the extracted authenticationinformation, whereas the digital processing device includes anadditional service identity unit and generates the additional servicerequest message including an additional service identity code, includedin the additional service identity unit, and the authenticationinformation, and the communication network device transmits theadditional service request message to the additional service providingdevice according to the additional service identity code included in theadditional service request message.

The transmitting of the additional service data according to theextracted authentication information further can include encoding theadditional service data, and the encoded additional service data can bedecoded in the digital processing device.

The additional service identity code and the authentication information,included in the additional service request message, can be stored inmeans mounted inside or outside of the digital processing device.

The digital processing device can further include a subscriber identityunit, storing a communication operator identity code and generating acommunication network request message, and the additional serviceidentity unit can be mounted inside of the digital processing device,and the subscriber identity unit can be mounted outside of the digitalprocessing device.

The operation that the digital processing device transmits theadditional service request message can include identifying theconnection of the outside-mounted subscriber identity unit; readingauthentication information from the inside-mounted additional serviceidentity unit if the connection of the outside-mounted subscriberidentity unit is not identified; generating an additional servicerequest message including the read authentication information; andtransmitting the generated additional service request message to thecommunication network device.

In the identifying of the connection of the outside-mounted subscriberidentity unit, the connection can be identified by an interrupt signalgenerated if the outside-mounted subscriber identity unit is connected.

The communication network can also employ at least one of a widebandcode division multiple access (WCDMA) method and a global system formobile communication method.

Another aspect of the present invention is an additional serviceproviding system, which provides an additional service to a digitalprocessing device through a communication network.

Another aspect of the present invention is an additional serviceproviding system, which provides an additional service to a digitalprocessing device including an additional service identity unit,including a communication network device, receiving an additionalservice operator identity code, included in the additional serviceidentity unit of the digital processing device, and an additionalservice providing request message including additional serviceauthentication information from the digital processing unit; and anadditional service providing device, receiving the additional serviceproviding request message from the communication network device andtransmitting additional service data to the digital processing device,whereas the communication network device extracts the additional serviceoperator identity code, included in the additional service providingrequest message, and transmits the additional service providing requestmessage to the additional service providing device corresponding to theextracted additional service operator identity code, and the additionalservice providing device extracts the authentication informationincluded in the additional service providing request message andtransmits the additional service data according to the extractedauthentication information.

The digital processing device can store the additional service identitycode and the authentication information, included in the additionalservice request message, in means mounted inside or outside of thedigital processing device.

The additional service providing device can encode the additional data,and the encoded additional service data is decoded in the digitalprocessing device.

The digital processing device further includes a subscriber identityunit, storing a communication operator identity code and generating acommunication network request message, and the additional serviceidentity unit is mounted inside of the digital processing device, andthe subscriber identity unit is mounted outside of the digitalprocessing device.

The additional service can access the communication network by usinginformation stored in the inside-mounted additional service identityunit if the subscriber identity unit is not coupled, and thecommunication network can employ at least one of a wideband codedivision multiple access (WCDMA) method and a global system for mobilecommunication method.

Another aspect of the invention is a digital processing device foraccessing a communication network and receiving an additional service,the device comprising: an input unit configured to receive a signal; asubscriber identity unit configured to store an identity code of acommunication operator and generate a communication network accessrequest message; an additional service identity unit configured to storean identity code of an additional service operator and generate anadditional service request message; and a control unit configured togenerate, based on the received signal, a control signal configured toselectively drive one of the subscriber identity unit and the additionalservice identity unit.

In the above device, the subscriber identity unit is further configuredto store subscriber authentication and charging information related tothe communication operator, and the additional service identity unit isfurther configured to store subscriber authentication and charginginformation related to the additional service operator.

In the above device, at least one of the subscriber identity unit andthe additional service identity unit is plurally provided. In the abovedevice, at least one of the subscriber identity unit and the additionalservice identity unit is located outside the digital processing devicein the form of a card or chip. In the above device, the additionalservice identity unit is formed inside the digital processing device,and the subscriber identity unit is located outside the digitalprocessing device. In the above device, the additional service isconfigured to access the communication network by the use of informationstored in the additional service identity unit if the subscriberidentity unit is not connected.

Another aspect of the invention is a method of providing an additionalservice via an additional service providing device, the methodcomprising: receiving an additional service request message, via adigital processing device, from a communication network device, whereinthe digital processing device and communication network device are indata communication with the additional service providing device, whereinthe digital processing device comprises an additional service identityunit and is configured to generate the additional service requestmessage, and wherein the additional service request message comprises anadditional service identity code and the authentication information;extracting authentication information from the additional servicerequest message; and transmitting additional service data according tothe extracted authentication information, wherein the communicationnetwork device is configured to transmit the additional service requestmessage to the additional service providing device according to theadditional service identity code.

In the above method, the transmitting comprises encoding the additionalservice data, and the encoded additional service data is decoded in thedigital processing device. In the above method, the additional serviceidentity code and the authentication information are stored in a memorylocated inside or outside the digital processing device. In the abovemethod, the digital processing device farther comprises a subscriberidentity unit, configured to store a communication operator identitycode and generate a communication network request message, and theadditional service identity unit is located inside the digitalprocessing device, and the subscriber identity unit is located outsidethe digital processing device.

The above method further comprises: identifying the connection of thesubscriber identity unit; reading authentication information from theadditional service identity unit if the connection of the subscriberidentity unit is not identified; generating an additional servicerequest message comprising the read authentication information; andtransmitting the generated additional service request message to thecommunication network device. In the above method, the identifying isperformed by the use of an interrupt signal generated if the subscriberidentity unit is connected.

Another aspect of the invention is one or more processor-readablestorage devices having processor-readable code, the processor-readablecode which, when executed by one or more processors, performs a methodof providing an additional service via an additional service providingdevice, the method comprising: receiving an additional service requestmessage, via a digital processing device, from a communication networkdevice, wherein the digital processing device and communication networkdevice are in data communication with the additional service providingdevice, wherein the digital processing device comprises an additionalservice identity unit and is configured to generate the additionalservice request message, and wherein the additional service requestmessage comprises an additional service identity code and theauthentication information; extracting authentication information fromthe additional service request message; and transmitting additionalservice data according to the extracted authentication information,wherein the communication network device is configured to transmit theadditional service request message to the additional service providingdevice according to the additional service identity code.

In the storage devices, the digital processing device further comprisesa subscriber identity unit, configured to store a communication operatoridentity code and generate a communication network request message, andthe additional service identity unit is located inside the digitalprocessing device, and the subscriber identity unit is located outsidethe digital processing device, wherein the method further comprises:identifying the connection of the subscriber identity unit; readingauthentication information from the additional service identity unit ifthe connection of the subscriber identity unit is not identified;generating an additional service request message including the readauthentication information; and transmitting the generated additionalservice request message to the communication network device.

Another aspect of the invention is an additional service providingsystem, which provides an additional service to a digital processingdevice including an additional service identity unit, the systemcomprising: a communication network device configured to receive anadditional service operator identity code and an additional serviceproviding request message from the digital processing unit, wherein theadditional service providing request message comprises additionalservice authentication information and an additional service operatoridentity code; and an additional service providing device configured toreceive the additional service providing request message from thecommunication network device and transmit additional service data to thedigital processing device, wherein the communication network device isfurther configured to extract the additional service operator identitycode from the additional service providing request message, and transmitthe additional service providing request message to the additionalservice providing device corresponding to the extracted additionalservice operator identity code, and wherein the additional serviceproviding device is further configured to extract the authenticationinformation from the additional service providing request message andtransmit the additional service data according to the extractedauthentication information.

In the above system, the digital processing device is configured tostore the additional service identity code and the authenticationinformation in a memory located inside or outside the digital processingdevice. In the above system, the additional service providing device isfurther configured to encode the additional data, and wherein thedigital processing device is further configured to decode the encodedadditional service data. In the above system, the digital processingdevice further comprises a subscriber identity unit, configured to storea communication operator identity code and generate a communicationnetwork request message, and the additional service identity unit islocated inside the digital processing device, and the subscriberidentity unit is located outside the digital processing device. In theabove system, the additional service providing device is furtherconfigured to access the communication network based on informationstored in the additional service identity unit if the subscriberidentity unit is not coupled.

Still another aspect of the invention is a digital processing device foraccessing a communication network and receiving an additional service,the device comprising: a receiver configured to receive a signal; asubscriber identifier configured to store an identity code of acommunication operator and generate a communication network accessrequest message; an additional service identifier configured to store anidentity code of an additional service operator and generate anadditional service request message; and a controller configured togenerate, based on the received signal, a control signal configured toselectively drive one of the subscriber identity unit and the additionalservice identity unit.

Still another aspect of the invention is an apparatus for providing anadditional service via an additional service providing device, which isconnected to a digital processing device via a communication networkdevice, the apparatus comprising: means for receiving an additionalservice request message, via the digital processing device, from thecommunication network device, wherein the digital processing devicecomprises an additional service identity unit and is configured togenerate the additional service request message, and wherein theadditional service request message comprises an additional serviceidentity code and the authentication information, wherein thecommunication network device is configured to transmit the additionalservice request message to the additional service providing deviceaccording to the additional service identity code; means for extractingauthentication information from the additional service request message;and means for transmitting additional service data according to theextracted authentication information.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an example illustrating a structure of a typical communicationsystem for providing the application service.

FIG. 2 is a block diagram illustrating the configuration of a digitalprocessing device including an additional service identity module inaccordance with an embodiment of the present invention.

FIG. 3 is an example illustrating an additional service module realizedon a portable terminal in accordance with an embodiment of the presentinvention.

FIG. 4 is an example illustrating an additional service module realizedon a portable terminal in accordance with another embodiment of thepresent invention.

FIG. 5 is an example illustrating an additional service module realizedon a laptop computer in accordance with an embodiment of the presentinvention.

FIG. 6 is an example illustrating a structure of a communication systemfor providing the application service in accordance with an embodimentof the present invention.

FIG. 7 is a flow chart illustrating the order of receiving an additionalservice by using a digital processing device including an additionalservice module in accordance with an embodiment of the presentinvention.

FIG. 8 is a flow chart illustrating the order of identifying anadditional service identity module and a subscriber identity module inthe case of mounting inside the additional service identity module andoutside the subscriber identity module, in accordance with an embodimentof the present invention.

DETAILED DESCRIPTION OF CERTAIN INVENTIVE EMBODIMENTS

FIG. 1 is an example illustrating a structure of a typical communicationsystem for providing the application service. As illustrated in FIG. 1,in case that there are a plurality of communication operators, there isprovided each communication network device 110 a and 110 b, forming itscommunication network, offered by the respective communicationoperators. Also, there is provided each additional service providingdevice 120 a and 120 b offering additional services through thecommunication networks connected by the respective communication networkdevices 110 a and 110 b.

In this communication system, a user using the digital processing device100 can limitedly access the only communication network devices 110 aand 110 b of the communication operator that the user subscribed to. Forexample, as illustrated in FIG. 1, if the user of the digital processingdevice 100 subscribes to an A communication operator, the user canaccess the only communication network device 110 a provided by the Acommunication operator.

This is not only because frequency bands different from each other percommunication operator are used or signal transmitting methods aredifferent from each other but also because the user can limitedly accessthe only communication network device of the communication operator thatthe user subscribes to, by the subscriber identity module included inthe digital processing device. However, this description is based on theonly case of restricting the communication network device that can beaccessed by the subscriber identity module.

The user, who desires to receive the additional service through thedigital processing device, can be connected to the communication networkdevice 111 a only after accessing the communication network device 110 aof the communication operator that the user subscribed to and undergoingthe authenticating operation by using a subscriber identity moduleincluded in the digital processing device.

In case that the digital processing device, for example, the portableterminal employs the AMP (Advanced Mobile phone service)/CDMA (CodeDivision Multiple Access) method, the user must store an electronicserial number (ESN) for communicating with a base station in an EEPROM(Electrically Erasable Programmable Read Only Memory) inside of theportable terminal or couple an external chip or card, stored with theESN, to the portable terminal, in order to receive the communicationservice.

Beside that, identity information of a communication service subscriberand a mobile network code (MNC), which is the code of the subscribedcommunication operator, must be stored to receive the communicationservice. A subscriber identity module (SIM) refers to the device or theprogram storing the ESN and the MNC. Accordingly, the user who desiresto use the additional service can receive the additional service onlyafter subscribing to a specific communication operator.

Also, the user is permitted to access the only communication networkdevice of the communication operator that the user subscribed to. Thus,the user can receive the additional service provided by thecommunication operator offering the communication network or provided bythe additional service providing device connected to the onlycommunication network device of the communication operator.

The communication network devices of the respective communicationoperators must be connected to each other in order to receive theadditional service from the additional service providing deviceconnected to the only communication network device of anothercommunication operator. The additional service can be provided, only incase that the connection network device 110 a of the communicationoperator subscribed by the user provides authentication information tothe connection network device 110 b of another communication operator.

Accordingly, since the additional service provider is restricted toprovide the additional service, the additional service provider issubordinated to the communication operator and is unable toindependently provide the additional service to the user of the digitalprocessing device.

Beside that, since the user of the digital processing device ispermitted to use the limited additional service provided by thecommunication operator that the user subscribed to or must undergo anadditional authenticating operation, it is limited to use variousadditional services.

Hereinafter, some embodiments will be described in detail with referenceto the accompanying drawings. Identical or corresponding elements willbe given the same reference numerals, regardless of the figure numberfor easy general understanding.

In one embodiment, a digital processing device refers to an electronicdevice having its compact size enough to make it handy for a user tocarry in order to perform a function such as a video game and mobilecommunication. For example, the digital processing device can includenot only a mobile communication terminal, a personal digital assistant(PDA) and a portable multimedia player (PDA) but also a laptop computerhaving a recent communication function and portability caused by itsminiaturization.

In one embodiment, the additional service, which refers to the serviceaccessing a communication network and receiving information such as avideo game, music and a broadcasting program, is different from acommunication service directly provided by an operator who provides acommunication network such as mobile communication and wirelessInternet. An additional service provider is called a contents provider(CP) or a service provider (SP).

First, the configuration of a digital processing device including anadditional service identity module in accordance with one embodiment ofthe present invention will be described with reference to FIG. 2.

FIG. 2 is a block diagram illustrating the configuration of a digitalprocessing device 200 including an additional service identity module inaccordance with an embodiment of the present invention.

As illustrated in FIG. 2, in accordance with the embodiment of thepresent invention, the digital processing device 200 can include aninput unit 210, a display unit 220, a transmitting and receiving unit230, a control unit 240, a subscriber identity unit 250 and anadditional service identity unit 260.

The input unit 210 is means for receiving a control command and afunction selecting command, for controlling the operation of the digitalprocessing device. For example, the input unit 210 is realized as aplurality of key buttons (e.g. a number/character key and a symbol keyof ‘*’ or ‘#’) and at least one function key (e.g. a menu key, aconfirming key and a key for accessing wireless Internet) or in a formof a touch screen. Specially, the input unit 210 can be inputted with acommand selectively driving the subscriber identity unit 250 and theadditional service identity unit 260.

The display unit 220 performs the function of displaying video data,image data, character data and number data. For example, the displayunit 220 can be a liquid crystal display (LCD).

The transmitting and receiving unit 230, which is connected to theadditional service providing device through a communication networkdevice forming the communication network, transmits information (e.g. anadditional service providing request command), inputted through theinput unit 210, to the additional service providing device. Also, thetransmitting and receiving unit 230 can receive and transfer to thecontrol unit 240, data (e.g. data of the additional servicecorresponding to the additional service providing request information)corresponding to information (e.g. additional service providing requestinformation), inputted from the additional service providing devicethrough input unit 210 and transferred.

The control unit 240 performs the function controlling each element(e.g. the input unit 210, the display unit, the transmitting andreceiving unit 230, the subscriber identity unit 250 and additionalservice identity unit 260) of the digital processing device 200.According to a command, inputted through the input unit 210, selectingone of the subscriber identity unit 250 and additional service identityunit 260, the control unit 240 generates a control signal drivingselected one.

The subscriber identity unit 250 and the additional service identityunit 260 generates a communication network access request message byusing a mobile network code included in the subscriber identity unit 250and the additional service identity unit 260, respectively, according tothe control signal. The generated communication network access requestmessage is transferred to the transmitting and receiving unit 230 and istransmitted to the communication network (more particularly, a deviceforming the communication network).

The subscriber identity unit 250, which includes a device or a program,designated as a subscriber identity module, stores the authentication,charging and security information of a communication service subscriberand provides the information to the communication network device. Thesubscriber identity module also stores a mobile network code (MNC),which is information defining a communication operator. The subscriberidentity module can be mounted in a form of a chip inside or outside ofthe digital processing device 200 or be installed in a form of a programin the digital processing device 200, to be included in the subscriberidentity unit 250.

The additional service identity unit 260, which includes a device or aprogram, designated as a subscriber identity module, stores theauthentication, charging and security information of an additionalservice subscriber and provides the information to the additionalservice providing server or the additional service providing device.Like the subscriber identity unit 250, an additional service identitymodule also stores a mobile network code (MNC), which is informationdefining a communication operator. The additional service identitymodule can be mounted in a form of a chip inside or outside of thedigital processing device 200 or be installed in a form of a program inthe digital processing device 200, to be included in the additionalservice identity unit 260.

In one embodiment, the additional service identity module, which is tobe identified differently from the subscriber identity module, refers toa program or a device, storing the MNC and authentication information ofan additional service provider for providing the additional service.

The subscriber identity module (SIM, or user identity module (UIM)),which is a form of a card capable of being used in the mobilecommunication terminal or a module capable of being mounted insidethereof, refers to a chip or program storing information such that avariety of information can be provided. The subscriber identity unit 250includes and drives the subscriber identity module. The additionalservice identity unit, similarly to the subscriber identity unit 250,also includes and drives the additional service identity module.

A part stored with information is stored in the form of the chip or cardoutside of the digital processing device. The generation of a requestmessage with use of the actually stored information can be performed bya program pre-stored in the digital processing device.

For example, in case that the program, storing an only additionalservice MNC for providing the additional service to the chip, ispre-installed in the digital processing device, it is recognized thatthe chip stored with the additional service MNC is the additionalidentity module and the additional service identity unit 260, which isthe program generating an additional service request message by mountingthe additional service identity module, is driven. Accordingly, thesubscriber identity unit 260 and the subscriber identity module aremerely recognized according to the realized form. Similarly, theadditional service identity unit 260 and the additional service identitymodule are merely recognized according to the realized form.

The subscriber identity module, in the case of receiving a mobilecommunication service especially through the mobile communicationterminal, is to be provided with the mobile communication servicethrough the only mobile communication terminal of each mobilecommunication operator. The present invention is not limited to themobile communication terminal.

Through the mobile network code (MNC) included in the subscriberidentity module, the communication network device of the communicationoperator is connected to the only digital processing device that a usersubscribed to a specific communication operator by the subscriberidentity module

For example, if the user using the mobile communication attempts to makea call by using the mobile communication terminal, a communicationnetwork access request message is received from the mobile communicationterminal including the MNC.

In accordance with the MNC included in the communication network accessrequest message, a communication device of the mobile communicationoperator recognizes that the terminal making the call is the mobilecommunication terminal subscribed to its mobile communication serviceand provides the corresponding call service. Accordingly, the currentlymobile communication terminal includes the MNC in the subscriberidentity module as the default value, and the subscriber identity moduleis pre-stored inside of the mobile communication terminal.

Besides that, the additional service identity module refers to a chip ora program, storing information necessary to provide the services such asthe authentication, charging and security information of an additionalservice subscriber requested to provide the addition service andincludes a virtual MNC of the additional service provider providing theadditional service.

In this description, the term, virtual MNC, is used to be distinguishedfrom the MNC included in the subscriber identity module. However, thevirtual MNC does not necessarily consist of only numbers indicating aspecific phone number like the MNC included in the subscriber identitymodule.

Accordingly, in case that the additional service can be connected to aspecific phone number and be received, the virtual MNC indicates thenumber (e.g. 700-000) referring to the operator providing the additionalservice. In case that the additional service can be provided by aspecific web server, the virtual MNC can indicate the uniform resourcelocator (URL) or IP address of the web server.

Meanwhile, the additional service identity unit 260 can be mountedinside of the digital processing device 200, and the subscriber identityunit 250 can mounted outside of the digital processing device 200.

In case that the digital processing device 200 is embodied in theaforementioned forms, if the subscriber identity unit 250 is notcoupled, it is possible that the additional service subscriber 260 isused so as to access the communication network by using the informationstored in the built-in additional service identity unit 260.

Particularly, in case that the communication network is the mobilecommunication network of the WCDMA(Wideband Code Division MultipleAccess) or GSM(Global System for Mobile communication) method, it isemployed as the standard to allow the subscriber identity unit 250 to bemounted in the form of the card in the outside.

Accordingly, in case that the subscriber identity unit 250, mounted inthe outside, is inserted into the digital processing device, the mobilecommunication service is received by using the subscriber identity unit250. In case that the subscriber identity unit 250 is not coupled, themobile communication service can be provided by using the built-inadditional service identity unit 260.

In addition, the digital processing device 200 can further include astoring unit (not shown) storing data related to the additional service,an operating program of the digital processing device and predeterminedalgorithm, by the control of the control unit 240.

Examples of actually realizing the additional service identity module inthe digital processing device 200 by referring to the configuration ofthe digital processing device 200 will be described with reference toFIG. 3 through FIG. 5.

FIG. 3 is an example illustrating an additional service module realizedon a portable terminal in accordance with an embodiment of the presentinvention, and FIG. 4 is an example illustrating an additional servicemodule realized on a portable terminal in accordance with anotherembodiment of the present invention.

First, as illustrated in FIG. 3, an additional service identity module300 can be mounted through an interface provided in a part of theportable terminal, which is one of the types of the digital processingdevice 200, to be connected to the portable terminal.

As illustrated in FIG. 3, the portable terminal, which is one of thetypes of the digital processing device 200, can be provided with aninterface capable of being mounted with the additional service identitymodule 300, realized in the form of the chip, in a part of the back.

The additional service identity module 300, as illustrated in FIG. 3through FIG. 5, can be embodied in the form of the chip includinginformation defining the additional service provider providing aspecific additional service. Alternatively, the additional serviceidentity module 300 can be realized in the form of the card includingthis kind of chip.

In addition, as illustrated in FIG. 4, the additional service identitymodule 300 can be mounted in an interface provided in a side part of theportable terminal.

The digital processing device 200, as illustrated in FIG. 3 and FIG. 4,is not limited to the portable terminal. Any device capable of includingthe communication function, accessing the communication network andreceiving various services can be applied to embodiments of the presentinvention.

Accordingly, as illustrated in FIG. 5, the user can equip the additionalservice identity module 300 in a laptop computer having thecommunication function and access the communication network by using thelaptop computer to receive various additional services.

The additional service identity module 300, as described in the examplesof FIG. 3 through FIG. 5, can be realized in the form of the chipincluding the information defining the additional service provider.Alternatively, the additional service identity module 300 can beembodied in the form of the card including this kind of chip. Thus, thiskind of chip or card can be mounted inside or outside of the digitalprocessing device.

The additional service provider can provide the additional serviceidentity module 300, embodied in the form of the chip or card storedwith information related to the providing of the additional service, tothe user using the digital processing device 200.

Accordingly, the user can receive the additional service withoutadditional search by using the digital processing device 200 and aspecial authenticating operation, and the additional service providercan secure the user using the additional service in advance bypre-providing the chip or card stored with information related to theadditional service provider. Thus, the additional service provider canmore easily provide the additional service to the user.

In the meantime, as described above, the additional service identitymodule 300 can be mounted inside of the digital processing device, andthe subscriber identity unit 250 can be mounted outside thereof.

In case that the digital processing device 200 is embodied in theaforementioned forms, if the subscriber identity unit 250 is notcoupled, it is possible that the additional service identity module 300is used so as to access the communication network by using theinformation stored in the built-in additional service identity unit 260.

Particularly, in case that the communication network is the mobilecommunication network of the WCDMA(Wideband Code Division MultipleAccess) or GSM(Global System for Mobile communication) method, since itis employed as the standard to allow the subscriber identity unit 250 tobe mounted in the form of the card in the outside, if the subscriberidentity unit 250, mounted in the outside, is inserted into the digitalprocessing device, the mobile communication service is received by usingthe subscriber identity unit 250, and if the subscriber identity unit250 is not coupled, the mobile communication service can be provided byusing the built-in additional service identity module 300.

The structure of a communication system for providing an additionalservice by using the digital processing device 200 including theadditional service identity unit 250 or the additional service identitymodule 300 will be described with reference with FIG. 6.

The structure of a communication system according to one embodiment ofthe present invention will be described as compared with that of thetypical communication system providing the additional service.

First, as illustrated in FIG. 6, in accordance with an embodiment of thepresent invention, a communication system for providing the additionalservice includes the digital processing device 200, communicationnetwork devices 600 a and 600 b, additional service providing device 610a and 610 b.

The digital processing device 200 includes the aforementioned additionalservice identity module 300. Any device capable of including thecommunication function and accessing the communication network devices600 a and 600 b is not limited to be used as the digital processingdevice 200.

The digital processing device 200, as described above, can be a personaldigital assistant (PDA), a mobile communication terminal (mobile phone)and a laptop computer.

The digital processing device is connected to the additional serviceproviding devices 610 a and 610 h through the communication networkdevices 600 a and 600 b. A communication network includes a mobilecommunication network and Internet.

Also, the Internet includes all international open network structuresproviding TCP/IP protocol and various service provided in an upperlayer, that is, HTTP (HyperText Transfer Protocol), Telnet, FTP(FileTransfer Protocol), DNS(Domain Name System), SMTP(Simple Mail TransferProtocol), SNMP(Simple Network Management Protocol) and NFS(Network FileService).

The mobile communication network can be structured by including elementssuch as an access gateway and a packet data serving node (PDSN), capableof receiving and transmitting wireless packet, in addition to a basestation (BS), a mobile telephone switching office (MTSO) and a homelocation register (HLR).

The difference between the communication system in accordance with theembodiment of the present invention and the typical communication systemwill be described with reference to these elements of the communicationsystem.

First, as illustrated in FIG. 1, in the case of receiving the additionalservice through the digital processing device 100, the communicationnetwork devices 110 and 110 b, which is connectable to the digitalprocessing device 100, are limited to the communication network device(e.g. 110 a in FIG. 1) of the communication operator that a usersubscribed to.

Conversely, in the communication system according to one embodiment ofthe present invention as illustrated in FIG. 6, if the digitalprocessing device 200 selects and drives the additional service identitymodule, the digital processing device 200 can access any communicationdevice 600 without any limitation of the communication device 600 of aspecific communication operator. The digital processing device 200 musthave a frequency band and a signal transmitting method, which areidentical to the communication device 600 of the specific communicationoperator, and the communication device 600 must recognize the MNCincluded in an access request message, in order that the digitalprocessing device 200 is connected to the communication device 600.

This description is based on the MNC but does not consider othercomponents for accessing the communication network device 600, forexample, the frequency band and the signal transmitting method.

However, the digital processing device 200 recognizes the communicationnetwork device 600 at the periphery where the digital processing device200 such that the addition service request message can be generated byusing the appropriate frequency band and signal transmitting method.

The generated additional service request message can be transmitted tothe communication network device 600 close to the digital processingdevice 200 and be transmitted to the additional service providing device610.

Accordingly, the communication network device 600 according to oneembodiment of the present invention can receive the additional servicerequest message having a virtual MNC of the additional service providerfrom the digital processing device 200 and transmit the additionalservice request message to the additional service providing device 610providing the additional service corresponding to the virtual MNC.

As illustrated in FIG. 1, the typical communication network devices 110a and 110 b are connected to each other through a network couplingdevice in order that the digital processing device 100 subscribing to aspecial communication operator is connected to the additional serviceproviding device 120, connected to the only communication network device110 b of another communication operator.

Referring to the example of FIG. 1, the communication network devicethat the digital processing device 100 can access is a communicationnetwork device A 110 a, and an additional service device A 120 a isconnected to the communication network device A 110 a. In the meantime,the communication network device provided by another communicationoperator is a communication network device B 110 b, and an additionalservice device B 120 b is connected to the communication network deviceB 110 b. In this case, the communication network device A 110 a and thecommunication network device B 110 b, respectively, provided by eachcommunication operator must be connected to each other in order toreceive the additional service provided by the additional service deviceB 120 b by using the digital processing device. Beside that,authentication information according to subscriber information, includedin the subscriber identity module, must be transmitted to thecommunication network device B 110 b.

Conversely, in the communication system according to one embodiment ofthe present invention as illustrated in FIG. 6, the digital processingdevice 200 can access any one of a communication network device A 600 aand a communication network device B 600 b, respectively, provided bythe different communication operators. Accordingly, unlike the typicalcommunication system, although the communication network device A 600 aand the communication network device B 600 b, respectively, provided bythe different communication operators are not necessarily connected toeach other, the user of the digital processing device 200 can receivethe additional service provided by any one of the communication networkdevice A 600 a and the communication network device B 600 b. Besidethat, since authentication information related to the respectiveadditional service providing devices has already been included in theadditional service identity module 300 and is transmitted, an additionalauthenticating process for providing the additional service is notrequested.

In accordance with an embodiment of the present invention, the order ofreceiving an additional service will be described by referring to thecommunication system capable of providing the additional service byusing the digital processing device 200 including the additional serviceidentity module 300 according to one embodiment of the presentinvention.

FIG. 7 is a flow chart illustrating the order of receiving theadditional service by using the digital processing device 200 includingan additional service module in accordance with an embodiment of thepresent invention.

First, as illustrated in FIG. 7, in accordance with an embodiment of thepresent invention, a user selects and drives one of the subscriberidentity unit 250 and the additional service identity unit 260, includedin the digital processing device 200, in a step represented by S700. Thesubscriber identity unit 250 and the additional service identity unit260, as described above, can be realized in a form of a chip, card, orprogram and be mounted inside or outside of the digital processingdevice 200.

First, in case that the user selects the subscriber identity modulethrough the digital processing device 200, the digital processing device200 generates a communication network access request message by usinginformation stored in the subscriber identity unit 250 and transmits thegenerated communication network access request message to thecommunication network device 600 in a step represented by S702. Theinformation stored in the subscriber identity unit 250 can include anMNC referring to an identity code of the communication operator andauthentication, charging and security information of the user of thedigital processing device.

The communication network device 600 extracts the MNC included in thereceived communication network access request message in a steprepresented by S704 and determines whether the digital processing device200 subscribes to the communication operator providing the communicationnetwork device 600 in a step represented by S706.

If it is determined that the digital processing device 200 subscribes tothe communication operator providing the communication network device600, the communication network device 600 extracts authenticationinformation included in the received communication network accessrequest message and performs the authenticating process of the user ofthe digital processing device 200 in a step represented by S708. As aresult, if it is the user is authenticated as the subscriber, thecommunication network device 600 transmits the result of requesting toaccess the communication network to the digital processing device 200 tobe connected to the digital processing device 200 in a step representedby S710. Once the digital processing device 200 and the communicationnetwork device 600 are connected to each other, the communicationnetwork device 600 can provide the communication service such as a calland wireless Internet through the digital processing device 200.

on the other hand, if the user selects and drives the additional serviceidentity unit 260, the digital processing device 200 generates anadditional service request message including information stored in theadditional service identity unit 260 and transmits the generatedadditional service request message to the communication network device600 in a step represented by S712. The information stored in theadditional service identity unit 260 can include a virtual MNC referringto an identity code of the communication operator and authentication,charging and security information of the user of the digital processingdevice.

The communication network device 600, which has received the additionalservice request message, extracts the virtual MNC included in theadditional service request message, similarly to the case of receivingthe communication network access request message, in a step representedby S714.

If it is determined that the extracted virtual MNC is not the MNC of thecommunication operator providing the communication network device 600,the communication network 600 searches the additional service providingdevice 610 corresponding to the extracted virtual MNC in a steprepresented by S716.

The communication network device 600 transmits the received theadditional service request message to the searched additional serviceproviding device in a step represented by S718. The additional serviceproviding device, which has received the additional service requestmessage, performs the authenticating process according to theauthentication information included in the additional service requestmessage.

As the result of the authenticating process, if it is the user isauthenticated as the subscriber, the additional service providing device610 transmits the result of requesting to provide the additional servicethrough the communication network device 600. After that, the additionalservice providing device 610 performs the transmission of additionalservice data according to the request of the additional service datarequested through the communication network device 600 to provide theadditional service in a step represented by S722.

The transmitted additional service data can be encoded and betransmitted to the digital processing device 200 through thecommunication network device 600. In this case, the digital processingdevice 200 can further include means for decoding the encoded additionalservice data.

The digital processing device 200 including the additional serviceidentity module according to one embodiment of the present invention canstructure the additional service identity module by including thevirtual MNC of the additional service provider, to thereby be capable ofreceiving various additional services without the subscription to thecommunication service of a specific communication operator. Accordingly,the additional service provider can provide the additional service tothe user of the digital processing device independently of thecommunication operator. Although the user subscribes to a specificcommunication operator, the user can use various additional servicesprovided by another additional service provider as well as the specificcommunication operator.

As described above, the additional service identity module 300 can bemounted inside of the digital processing device 200, and the subscriberidentity unit 250 can be mounted outside of the digital processingdevice 200.

In this case, the order of identifying the additional service identitymodule 300 and the subscriber identity unit 250 will be described withreference to FIG. 8.

FIG. 8 is a flow chart illustrating the order of identifying anadditional service identity module and a subscriber identity module inthe case of mounting inside the additional service identity module andoutside the subscriber identity module, in accordance with an embodimentof the present invention.

Since the additional service identity module is mounted in the inside inFIG. 8, the additional service identity module is called aninside-mounted subscriber identity module (SIM) or a default SIM. Sincethe subscriber identity module is mounted in the outside, the subscriberidentity module is called an outside-mounted SIM.

As illustrated in FIG. 8, first, it is identified that the outside-SIMis inserted into and is connected to the digital processing device 200in a step represented by S800.

The connection of the outside-mounted SIM can be identified bytransferring an interrupt signal, provided from an outside SIMconnection unit by the connection of the outside-mounted SIM, to thecontrol unit of the digital processing device 200.

If the connection of the outside-mounted SIM is not identified,information (e.g. authentication information, security information andcharging information) necessary to access the communication network isread from the built-in default SIM in a step represented by S802.

Conversely, if the connection of the outside-mounted SIM is identified,the information (e.g. authentication information, security informationand charging information) necessary to access the communication networkis read from the outside-mounted SIM in a step represented by S804.

A communication network access request message is generated by using theread information in a step represented by S806. The generated requestmessage is transferred to the communication system to perform a voicecall or the connection to the Internet network in a step represented byS808.

By further including the built-in default SIM in the digital processingdevice 200 that can use the communication method based on theoutput-mounted SIM as the standard(e.g. WCDMA), the user can omit thetroublesome process connecting the SIM one by one whenever the devicereceiving the communication service is changed.

By further including the charging information in the SIM, even thoughthe mobile communication operators are different from each other, thecommunication network device of each mobile communication operator cancommunicate with the digital processing device 200 of the user thoughthe default SIM and recognize location information of the user's digitalprocessing device 200.

Accordingly, although the user does not subscribe to the communicationservice of a specific communication operator, the user can receivevarious communication services, for example, special services,regardless of the subscription to the communication service, such as anemergency service and a lost article finding service.

According to at least one embodiment of the present invention, a user ofthe digital processing device can receive an additional service withouthis or her subscription to a specific communication operator.

Since it is possible that the user of the digital processing devicereceives the additional service without the subscription to the specificcommunication operator, an additional service provider is able toindependently provide the additional service to the user.

Also, the user can use various additional services in addition to theadditional services provided by the subscribed communication operator.

Particularly, in the case of mounting an additional service identityunit inside of the digital processing device and a subscriber identityunit outside of the digital processing device, if the subscriberidentity unit is lost or damaged in a mobile communication network thatis based on the case of mounting the subscriber identity unit in theoutside, such as an WCDMA method or a GSM method as the standard, themobile communication service can be provided.

While the above description has pointed out novel features of theinvention as applied to various embodiments, the skilled person willunderstand that various omissions, substitutions, and changes in theform and details of the device or process illustrated may be madewithout departing from the scope of the invention. Embodiments of theinvention can also be applied to non-video data. Therefore, the scope ofthe invention is defined by the appended claims rather than by theforegoing description. All variations coming within the meaning andrange of equivalency of the claims are embraced within their scope.

1. A digital processing device for accessing a communication network andreceiving an additional service, the device comprising: an input unitconfigured to receive a signal; a subscriber identity unit configured tostore an identity code of a communication operator and generate acommunication network access request message; an additional serviceidentity unit configured to store an identity code of an additionalservice operator and generate an additional service request message; anda control unit configured to generate, based on the received signal, acontrol signal configured to selectively drive one of the subscriberidentity unit and the additional service identity unit.
 2. The device ofclaim 1, wherein the subscriber identity unit is further configured tostore subscriber authentication and charging information related to thecommunication operator, and the additional service identity unit isfurther configured to store subscriber authentication and charginginformation related to the additional service operator.
 3. The device ofclaim 1, wherein at least one of the subscriber identity unit and theadditional service identity unit is plurally provided.
 4. The device ofclaim 1, wherein at least one of the subscriber identity unit and theadditional service identity unit is located outside the digitalprocessing device in the form of a card or chip.
 5. The device of claim4, wherein the additional service identity unit is formed inside thedigital processing device, and the subscriber identity unit is locatedoutside the digital processing device.
 6. The device of claim 5, whereinthe additional service is configured to access the communication networkby the use of information stored in the additional service identity unitif the subscriber identity unit is not connected.
 7. A method ofproviding an additional service via an additional service providingdevice, the method comprising: receiving an additional service requestmessage, via a digital processing device, from a communication networkdevice, wherein the digital processing device and communication networkdevice are in data communication with the additional service providingdevice, wherein the digital processing device comprises an additionalservice identity unit and is configured to generate the additionalservice request message, and wherein the additional service requestmessage comprises an additional service identity code and theauthentication information; extracting authentication information fromthe additional service request message; and transmitting additionalservice data according to the extracted authentication information,wherein the communication network device is configured to transmit theadditional service request message to the additional service providingdevice according to the additional service identity code.
 8. The methodof claim 7, wherein the transmitting comprises encoding the additionalservice data, and the encoded additional service data is decoded in thedigital processing device.
 9. The method of claim 7, wherein theadditional service identity code and the authentication information arestored in a memory located inside or outside the digital processingdevice.
 10. The method of claim 7, wherein the digital processing devicefurther comprises a subscriber identity unit, configured to store acommunication operator identity code and generate a communicationnetwork request message, and the additional service identity unit islocated inside the digital processing device, and the subscriberidentity unit is located outside the digital processing device.
 11. Themethod of claim 10, further comprising: identifying the connection ofthe subscriber identity unit; reading authentication information fromthe additional service identity unit if the connection of the subscriberidentity unit is not identified; generating an additional servicerequest message comprising the read authentication information; andtransmitting the generated additional service request message to thecommunication network device.
 12. The method of claim 11, wherein theidentifying is performed by the use of an interrupt signal generated ifthe subscriber identity unit is connected.
 13. One or moreprocessor-readable storage devices having processor-readable code, theprocessor-readable code which, when executed by one or more processors,performs a method of providing an additional service via an additionalservice providing device, the method comprising: receiving an additionalservice request message, via a digital processing device, from acommunication network device, wherein the digital processing device andcommunication network device are in data communication with theadditional service providing device, wherein the digital processingdevice comprises an additional service identity unit and is configuredto generate the additional service request message, and wherein theadditional service request message comprises an additional serviceidentity code and the authentication information; extractingauthentication information from the additional service request message;and transmitting additional service data according to the extractedauthentication information, wherein the communication network device isconfigured to transmit the additional service request message to theadditional service providing device according to the additional serviceidentity code.
 14. The storage devices of claim 13, wherein the digitalprocessing device further comprises a subscriber identity unit,configured to store a communication operator identity code and generatea communication network request message, and the additional serviceidentity unit is located inside the digital processing device, and thesubscriber identity unit is located outside the digital processingdevice, wherein the method further comprises: identifying the connectionof the subscriber identity unit; reading authentication information fromthe additional service identity unit if the connection of the subscriberidentity unit is not identified; generating an additional servicerequest message including the read authentication information; andtransmitting the generated additional service request message to thecommunication network device.
 15. An additional service providingsystem, which provides an additional service to a digital processingdevice including an additional service identity unit, the systemcomprising: a communication network device configured to receive anadditional service operator identity code and an additional serviceproviding request message from the digital processing unit, wherein theadditional service providing request message comprises additionalservice authentication information and an additional service operatoridentity code; and an additional service providing device configured toreceive the additional service providing request message from thecommunication network device and transmit additional service data to thedigital processing device, wherein the communication network device isfurther configured to extract the additional service operator identitycode from the additional service providing request message, and transmitthe additional service providing request message to the additionalservice providing device corresponding to the extracted additionalservice operator identity code, and wherein the additional serviceproviding device is further configured to extract the authenticationinformation from the additional service providing request message andtransmit the additional service data according to the extractedauthentication information.
 16. The system of claim 15, wherein thedigital processing device is configured to store the additional serviceidentity code and the authentication information in a memory locatedinside or outside the digital processing device.
 17. The system of claim15, wherein the additional service providing device is furtherconfigured to encode the additional data, and wherein the digitalprocessing device is further configured to decode the encoded additionalservice data.
 18. The system of claim 15, wherein the digital processingdevice further comprises a subscriber identity unit, configured to storea communication operator identity code and generate a communicationnetwork request message, and the additional service identity unit islocated inside the digital processing device, and the subscriberidentity unit is located outside the digital processing device.
 19. Thesystem of claim 18, wherein the additional service providing device isfurther configured to access the communication network based oninformation stored in the additional service identity unit if thesubscriber identity unit is not coupled.
 20. A digital processing devicefor accessing a communication network and receiving an additionalservice, the device comprising: a receiver configured to receive asignal; a subscriber identifier configured to store an identity code ofa communication operator and generate a communication network accessrequest message; an additional service identifier configured to store anidentity code of an additional service operator and generate anadditional service request message; and a controller configured togenerate, based on the received signal, a control signal configured toselectively drive one of the subscriber identity unit and the additionalservice identity unit.
 21. An apparatus for providing an additionalservice via an additional service providing device, which is connectedto a digital processing device via a communication network device, theapparatus comprising: means for receiving an additional service requestmessage, via the digital processing device, from the communicationnetwork device, wherein the digital processing device comprises anadditional service identity unit and is configured to generate theadditional service request message, and wherein the additional servicerequest message comprises an additional service identity code and theauthentication information, wherein the communication network device isconfigured to transmit the additional service request message to theadditional service providing device according to the additional serviceidentity code; means for extracting authentication information from theadditional service request message; and means for transmittingadditional service data according to the extracted authenticationinformation.